How can we configure Nexus Repository in (High Availability) HA mode?

Configuring Nexus repository in HA mode, in line to CA (Release Automation) RA installed in HA mode.

CA RA: 6.4,6.5 or higher

Repository Server - Nexus
When configuring the Management servers as highly available the repository server should be installed remote from the NAC and in a highly available configuration. The Nexus repository can be configured in an active passive configuration and in the event of a repository failure release automation can be reconfigured to redirect to the secondary node, details can be found on the Sonatype website for this configuration https://support.sonatype.com/entries/21451383-How-to-Set-up-Active-Standby-Failover.

CA Release Automation 5.x / 6.x Architecture and Implementation Best Practice Guide: https://communities.ca.com/docs/DOC-231165900-ca-release-automation-5x-6x-architecture-and-implementation-best-practice-guide